{"id":1096655,"date":"2025-01-08T15:03:33","date_gmt":"2025-01-08T07:03:33","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1096655.html"},"modified":"2025-01-08T15:03:38","modified_gmt":"2025-01-08T07:03:38","slug":"python%e4%b8%ad%e5%a6%82%e4%bd%95%e5%ae%9a%e4%b9%89%e8%be%93%e5%85%a5%e6%95%b0%e7%bb%84%e7%9a%84%e9%95%bf%e5%ba%a6-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1096655.html","title":{"rendered":"python\u4e2d\u5982\u4f55\u5b9a\u4e49\u8f93\u5165\u6570\u7ec4\u7684\u957f\u5ea6"},"content":{"rendered":"

\"python\u4e2d\u5982\u4f55\u5b9a\u4e49\u8f93\u5165\u6570\u7ec4\u7684\u957f\u5ea6\"<\/p>\n

\u5728Python\u4e2d\uff0c\u5b9a\u4e49\u8f93\u5165\u6570\u7ec4\u7684\u957f\u5ea6\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u6765\u5b9e\u73b0\uff0c\u4e3b\u8981\u6709\u4f7f\u7528\u5185\u7f6e\u51fd\u6570len()\u3001\u624b\u52a8\u7ef4\u62a4\u8ba1\u6570\u5668\u3001\u5229\u7528\u7b2c\u4e09\u65b9\u5e93\u5982NumPy<\/strong>\u7b49\u3002\u7279\u522b\u662f\u4f7f\u7528\u5185\u7f6e\u51fd\u6570len()\uff0c\u5b83\u53ef\u4ee5\u5feb\u901f\u4e14\u65b9\u4fbf\u5730\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u8fd9\u662fPython\u4e2d\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u76f8\u5e94\u7684\u793a\u4f8b\u4ee3\u7801\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528\u5185\u7f6e\u51fd\u6570len()<\/code><\/h3>\n<\/p>\n

\u5185\u7f6e\u51fd\u6570len()<\/code>\u662fPython\u4e2d\u6700\u5e38\u7528\u7684\u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\u7684\u65b9\u6cd5\u3002\u5b83\u975e\u5e38\u7b80\u5355\u4e14\u9ad8\u6548\uff0c\u9002\u7528\u4e8e\u5217\u8868\u3001\u5143\u7ec4\u7b49\u591a\u79cd\u6570\u636e\u7c7b\u578b\u3002<\/p>\n<\/p>\n

\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n<\/p>\n

array = [1, 2, 3, 4, 5]<\/p>\n
length = len(array)<\/p>\n
print(f"The length of the array is: {length}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u6bb5\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u6570\u7ec4array<\/code>\uff0c\u7136\u540e\u4f7f\u7528len()<\/code>\u51fd\u6570\u6765\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u5e76\u5c06\u5176\u6253\u5370\u51fa\u6765\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u624b\u52a8\u7ef4\u62a4\u8ba1\u6570\u5668<\/h3>\n<\/p>\n
\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f8b\u5982\u5f53\u4f60\u9700\u8981\u5728\u6570\u636e\u5904\u7406\u7684\u8fc7\u7a0b\u4e2d\u7ef4\u62a4\u6570\u7ec4\u957f\u5ea6\uff0c\u624b\u52a8\u7ef4\u62a4\u4e00\u4e2a\u8ba1\u6570\u5668\u4e5f\u662f\u4e00\u79cd\u65b9\u6cd5\u3002\u867d\u7136\u4e0d\u5982len()<\/code>\u51fd\u6570\u76f4\u63a5\uff0c\u4f46\u5728\u7279\u5b9a\u573a\u666f\u4e0b\u6709\u5176\u5e94\u7528\u4ef7\u503c\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n<\/p>\n
array = [1, 2, 3, 4, 5]<\/p>\n
count = 0<\/p>\n
for item in array:<\/p>\n
    count += 1<\/p>\n
print(f"The length of the array is: {count}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u6bb5\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7\u904d\u5386\u6570\u7ec4\u5e76\u624b\u52a8\u8ba1\u6570\u6765\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u867d\u7136\u8fd9\u79cd\u65b9\u6cd5\u8f83\u4e3a\u7e41\u7410\uff0c\u4f46\u5728\u4e00\u4e9b\u7279\u5b9a\u7684\u5e94\u7528\u573a\u666f\u4e2d\u4ecd\u7136\u6709\u5176\u72ec\u7279\u7684\u4ef7\u503c\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u5229\u7528NumPy\u5e93<\/h3>\n<\/p>\n
\u5bf9\u4e8e\u79d1\u5b66\u8ba1\u7b97\u548c\u6570\u636e\u5206\u6790\uff0cNumPy\u5e93\u662f\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u7684\u5de5\u5177\u3002\u5b83\u63d0\u4f9b\u4e86\u8bb8\u591a\u65b9\u4fbf\u7684\u51fd\u6570\u548c\u65b9\u6cd5\u6765\u5904\u7406\u6570\u7ec4\uff0c\u5305\u62ec\u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n<\/p>\n
import numpy as np<\/p>\n
array = np.array([1, 2, 3, 4, 5])<\/p>\n
length = array.size<\/p>\n
print(f"The length of the array is: {length}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u6bb5\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528NumPy\u5e93\u6765\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4array<\/code>\uff0c\u7136\u540e\u4f7f\u7528size<\/code>\u5c5e\u6027\u6765\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\u3002NumPy\u4e0d\u4ec5\u53ef\u4ee5\u5904\u7406\u4e00\u7ef4\u6570\u7ec4\uff0c\u8fd8\u53ef\u4ee5\u5904\u7406\u591a\u7ef4\u6570\u7ec4\uff0c\u662f\u6570\u636e\u5206\u6790\u548c\u79d1\u5b66\u8ba1\u7b97\u7684\u4e0d\u4e8c\u9009\u62e9\u3002<\/p>\n<\/p>\n
\u56db\u3001\u7ed3\u5408\u7528\u6237\u8f93\u5165\u52a8\u6001\u5b9a\u4e49\u6570\u7ec4\u957f\u5ea6<\/h3>\n<\/p>\n
\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6570\u7ec4\u7684\u957f\u5ea6\u53ef\u80fd\u662f\u52a8\u6001\u53d8\u5316\u7684\uff0c\u5f80\u5f80\u9700\u8981\u6839\u636e\u7528\u6237\u8f93\u5165\u6765\u5b9a\u4e49\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u53ef\u4ee5\u7ed3\u5408\u7528\u6237\u8f93\u5165\u548c\u4e0a\u8ff0\u65b9\u6cd5\u6765\u52a8\u6001\u5b9a\u4e49\u6570\u7ec4\u7684\u957f\u5ea6\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n<\/p>\n
array = []<\/p>\n
length = int(input("Enter the length of the array: "))<\/p>\n
for i in range(length):<\/p>\n
    element = int(input(f"Enter element {i+1}: "))<\/p>\n
    array.append(element)<\/p>\n
print(f"The array is: {array}")<\/p>\n
print(f"The length of the array is: {len(array)}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u6bb5\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7\u7528\u6237\u8f93\u5165\u6765\u52a8\u6001\u5b9a\u4e49\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u5e76\u4f7f\u7528len()<\/code>\u51fd\u6570\u6765\u9a8c\u8bc1\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u8fd9\u79cd\u65b9\u6cd5\u5728\u9700\u8981\u6839\u636e\u7528\u6237\u8f93\u5165\u6765\u5b9a\u4e49\u6570\u7ec4\u7684\u5e94\u7528\u573a\u666f\u4e2d\u975e\u5e38\u5b9e\u7528\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u5904\u7406\u591a\u7ef4\u6570\u7ec4<\/h3>\n<\/p>\n
\u5728\u5904\u7406\u591a\u7ef4\u6570\u7ec4\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528NumPy\u5e93\u6765\u65b9\u4fbf\u5730\u83b7\u53d6\u6570\u7ec4\u7684\u5f62\u72b6\u548c\u957f\u5ea6\u3002\u591a\u7ef4\u6570\u7ec4\u5728\u79d1\u5b66\u8ba1\u7b97\u548c\u6570\u636e\u5206\u6790\u4e2d\u975e\u5e38\u5e38\u89c1\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n<\/p>\n
import numpy as np<\/p>\n
array = np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])<\/p>\n
shape = array.shape<\/p>\n
print(f"The shape of the array is: {shape}")<\/p>\n
print(f"The number of elements in the array is: {array.size}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u6bb5\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528NumPy\u5e93\u521b\u5efa\u4e86\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4array<\/code>\uff0c\u5e76\u4f7f\u7528shape<\/code>\u5c5e\u6027\u6765\u83b7\u53d6\u6570\u7ec4\u7684\u5f62\u72b6\uff0c\u4f7f\u7528size<\/code>\u5c5e\u6027\u6765\u83b7\u53d6\u6570\u7ec4\u7684\u603b\u5143\u7d20\u6570\u3002\u8fd9\u79cd\u65b9\u6cd5\u5728\u5904\u7406\u590d\u6742\u6570\u636e\u7ed3\u6784\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n
\u516d\u3001\u4f7f\u7528\u81ea\u5b9a\u4e49\u7c7b\u548c\u65b9\u6cd5<\/h3>\n<\/p>\n
\u5728\u67d0\u4e9b\u9ad8\u7ea7\u5e94\u7528\u4e2d\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u5b9a\u4e49\u81ea\u5df1\u7684\u7c7b\u548c\u65b9\u6cd5\u6765\u5904\u7406\u6570\u7ec4\u53ca\u5176\u957f\u5ea6\u3002\u8fd9\u79cd\u65b9\u6cd5\u63d0\u4f9b\u4e86\u66f4\u5927\u7684\u7075\u6d3b\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n<\/p>\n
class CustomArray:<\/p>\n
    def __init__(self, elements):<\/p>\n
        self.elements = elements<\/p>\n
    def length(self):<\/p>\n
        count = 0<\/p>\n
        for item in self.elements:<\/p>\n
            count += 1<\/p>\n
        return count<\/p>\n
array = CustomArray([1, 2, 3, 4, 5])<\/p>\n
print(f"The length of the custom array is: {array.length()}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u6bb5\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2aCustomArray<\/code>\u7c7b\uff0c\u5e76\u5728\u7c7b\u4e2d\u5b9a\u4e49\u4e86\u4e00\u4e2a\u65b9\u6cd5length()<\/code>\u6765\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u8fd9\u79cd\u65b9\u6cd5\u5728\u9700\u8981\u81ea\u5b9a\u4e49\u6570\u636e\u7ed3\u6784\u548c\u65b9\u6cd5\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u548c\u751f\u6210\u5668<\/h3>\n<\/p>\n
\u5217\u8868\u63a8\u5bfc\u5f0f\u548c\u751f\u6210\u5668\u662fPython\u4e2d\u975e\u5e38\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u5b83\u4eec\u4e0d\u4ec5\u53ef\u4ee5\u7528\u4e8e\u521b\u5efa\u6570\u7ec4\uff0c\u8fd8\u53ef\u4ee5\u7528\u4e8e\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n<\/p>\n
array = [i for i in range(1, 6)]<\/p>\n
length = len(array)<\/p>\n
print(f"The length of the array is: {length}")<\/p>\n
Using a generator<\/strong><\/h2>\n
generator = (i for i in range(1, 6))<\/p>\n
length = sum(1 for _ in generator)<\/p>\n
print(f"The length of the generator array is: {length}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u6bb5\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u521b\u5efa\u4e86\u4e00\u4e2a\u6570\u7ec4\uff0c\u5e76\u4f7f\u7528len()<\/code>\u51fd\u6570\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u63a5\u7740\uff0c\u6211\u4eec\u4f7f\u7528\u751f\u6210\u5668\u521b\u5efa\u4e86\u4e00\u4e2a\u6570\u7ec4\uff0c\u5e76\u901a\u8fc7\u904d\u5386\u751f\u6210\u5668\u6765\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u8fd9\u79cd\u65b9\u6cd5\u5728\u5904\u7406\u5927\u6570\u636e\u96c6\u65f6\u975e\u5e38\u9ad8\u6548\u3002<\/p>\n<\/p>\n
\u516b\u3001\u4f7f\u7528\u9012\u5f52\u65b9\u6cd5<\/h3>\n<\/p>\n
\u5728\u67d0\u4e9b\u7279\u6b8a\u60c5\u51b5\u4e0b\uff0c\u9012\u5f52\u65b9\u6cd5\u4e5f\u53ef\u4ee5\u7528\u6765\u8ba1\u7b97\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u8fd9\u79cd\u65b9\u6cd5\u867d\u7136\u4e0d\u5e38\u7528\uff0c\u4f46\u5728\u67d0\u4e9b\u7279\u5b9a\u7684\u7b97\u6cd5\u4e2d\u5177\u6709\u72ec\u7279\u7684\u5e94\u7528\u4ef7\u503c\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n<\/p>\n
def array_length(array):<\/p>\n
    if not array:<\/p>\n
        return 0<\/p>\n
    return 1 + array_length(array[1:])<\/p>\n
array = [1, 2, 3, 4, 5]<\/p>\n
length = array_length(array)<\/p>\n
print(f"The length of the array is: {length}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u6bb5\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u9012\u5f52\u51fd\u6570array_length()<\/code>\u6765\u8ba1\u7b97\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u867d\u7136\u9012\u5f52\u65b9\u6cd5\u4e0d\u5982\u5176\u4ed6\u65b9\u6cd5\u76f4\u89c2\uff0c\u4f46\u5728\u5904\u7406\u67d0\u4e9b\u7279\u5b9a\u95ee\u9898\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n
\u4e5d\u3001\u5904\u7406\u5b57\u7b26\u4e32\u6570\u7ec4<\/h3>\n<\/p>\n
\u5728\u67d0\u4e9b\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u5904\u7406\u5b57\u7b26\u4e32\u6570\u7ec4\uff0c\u5e76\u83b7\u53d6\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u5b57\u7b26\u4e32\u6570\u7ec4\u5728\u6587\u672c\u5904\u7406\u548c\u81ea\u7136\u8bed\u8a00\u5904\u7406\u7b49\u9886\u57df\u975e\u5e38\u5e38\u89c1\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n<\/p>\n
array = ["apple", "banana", "cherry"]<\/p>\n
length = len(array)<\/p>\n
print(f"The length of the string array is: {length}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u6bb5\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4array<\/code>\uff0c\u5e76\u4f7f\u7528len()<\/code>\u51fd\u6570\u6765\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u8fd9\u79cd\u65b9\u6cd5\u5728\u5904\u7406\u6587\u672c\u6570\u636e\u65f6\u975e\u5e38\u5e38\u7528\u3002<\/p>\n<\/p>\n
\u5341\u3001\u7ed3\u5408\u5f02\u5e38\u5904\u7406<\/h3>\n<\/p>\n
\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u7ed3\u5408\u5f02\u5e38\u5904\u7406\u6765\u5904\u7406\u6570\u7ec4\u957f\u5ea6\u7684\u83b7\u53d6\uff0c\u7279\u522b\u662f\u5728\u5904\u7406\u7528\u6237\u8f93\u5165\u6216\u5916\u90e8\u6570\u636e\u65f6\u3002\u5f02\u5e38\u5904\u7406\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u5065\u58ee\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n<\/p>\n
try:<\/p>\n
    array = [1, 2, 3, 4, 5]<\/p>\n
    length = len(array)<\/p>\n
    print(f"The length of the array is: {length}")<\/p>\n
except Exception as e:<\/p>\n
    print(f"An error occurred: {e}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u6bb5\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u7ed3\u5408\u5f02\u5e38\u5904\u7406\u6765\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u5e76\u5728\u51fa\u73b0\u5f02\u5e38\u65f6\u6253\u5370\u9519\u8bef\u4fe1\u606f\u3002\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u5065\u58ee\u6027\uff0c\u7279\u522b\u662f\u5728\u5904\u7406\u4e0d\u53ef\u9760\u6570\u636e\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n
\u603b\u7ed3<\/h3>\n<\/p>\n
\u5728Python\u4e2d\uff0c\u5b9a\u4e49\u8f93\u5165\u6570\u7ec4\u7684\u957f\u5ea6\u6709\u591a\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528\u5185\u7f6e\u51fd\u6570len()<\/code>\u3001\u624b\u52a8\u7ef4\u62a4\u8ba1\u6570\u5668\u3001\u5229\u7528NumPy\u5e93\u3001\u7ed3\u5408\u7528\u6237\u8f93\u5165\u52a8\u6001\u5b9a\u4e49\u6570\u7ec4\u957f\u5ea6\u3001\u5904\u7406\u591a\u7ef4\u6570\u7ec4\u3001\u4f7f\u7528\u81ea\u5b9a\u4e49\u7c7b\u548c\u65b9\u6cd5\u3001\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u548c\u751f\u6210\u5668\u3001\u4f7f\u7528\u9012\u5f52\u65b9\u6cd5\u3001\u5904\u7406\u5b57\u7b26\u4e32\u6570\u7ec4\u4ee5\u53ca\u7ed3\u5408\u5f02\u5e38\u5904\u7406\u7b49\u3002\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u9002\u7528\u7684\u573a\u666f\u548c\u4f18\u7f3a\u70b9\uff0c\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u6548\u7387\u3002<\/p>\n<\/p>\n
\u901a\u8fc7\u4e0a\u8ff0\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u7075\u6d3b\u5730\u5904\u7406\u6570\u7ec4\u957f\u5ea6\u7684\u5b9a\u4e49\u548c\u83b7\u53d6\uff0c\u6ee1\u8db3\u4e0d\u540c\u5e94\u7528\u573a\u666f\u7684\u9700\u6c42\u3002\u5e0c\u671b\u8fd9\u7bc7\u6587\u7ae0\u80fd\u5e2e\u52a9\u4f60\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528Python\u4e2d\u7684\u6570\u7ec4\u957f\u5ea6\u5b9a\u4e49\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u521b\u5efa\u4e00\u4e2a\u56fa\u5b9a\u957f\u5ea6\u7684\u6570\u7ec4\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u6216NumPy\u5e93\u521b\u5efa\u56fa\u5b9a\u957f\u5ea6\u7684\u6570\u7ec4\u3002\u5bf9\u4e8e\u5217\u8868\uff0c\u53ef\u4ee5\u5148\u5b9a\u4e49\u4e00\u4e2a\u7a7a\u5217\u8868\uff0c\u7136\u540e\u901a\u8fc7\u5faa\u73af\u6216\u5217\u8868\u63a8\u5bfc\u5f0f\u6dfb\u52a0\u5143\u7d20\u3002\u82e5\u4f7f\u7528NumPy\uff0c\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u5f62\u72b6\u6765\u521b\u5efa\u4e00\u4e2a\u56fa\u5b9a\u957f\u5ea6\u7684\u6570\u7ec4\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
import numpy as np\n\n# \u4f7f\u7528\u5217\u8868\narray_length = 5\nfixed_list = [0] * array_length  # \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a5\u7684\u5217\u8868\uff0c\u521d\u59cb\u503c\u4e3a0\n\n# \u4f7f\u7528NumPy\nfixed_array = np.zeros(array_length)  # \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a5\u7684NumPy\u6570\u7ec4\uff0c\u521d\u59cb\u503c\u4e3a0\n<\/code><\/pre>\n
\u5728Python\u4e2d\u5982\u4f55\u786e\u4fdd\u8f93\u5165\u6570\u7ec4\u7684\u957f\u5ea6\u6709\u6548\uff1f<\/strong>
\u53ef\u4ee5\u901a\u8fc7\u6761\u4ef6\u8bed\u53e5\u9a8c\u8bc1\u7528\u6237\u8f93\u5165\u7684\u6570\u7ec4\u957f\u5ea6\u662f\u5426\u7b26\u5408\u9884\u671f\u3002\u53ef\u4ee5\u4f7f\u7528len()<\/code>\u51fd\u6570\u68c0\u67e5\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u5e76\u5728\u4e0d\u7b26\u5408\u6761\u4ef6\u65f6\u8fd4\u56de\u9519\u8bef\u63d0\u793a\u3002\u4f8b\u5982\uff1a<\/p>\n
input_array = [1, 2, 3]  # \u5047\u8bbe\u7528\u6237\u8f93\u5165\u7684\u6570\u7ec4\nexpected_length = 5\n\nif len(input_array) != expected_length:\n    print(f"\u9519\u8bef\uff1a\u6570\u7ec4\u957f\u5ea6\u5e94\u4e3a{expected_length}\uff0c\u4f46\u8f93\u5165\u7684\u957f\u5ea6\u4e3a{len(input_array)}\u3002")\n<\/code><\/pre>\n
\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u786e\u4fdd\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\uff0c\u907f\u514d\u56e0\u957f\u5ea6\u4e0d\u7b26\u5bfc\u81f4\u7684\u9519\u8bef\u3002<\/p>\n
Python\u4e2d\u5982\u4f55\u52a8\u6001\u5730\u8c03\u6574\u6570\u7ec4\u7684\u957f\u5ea6\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u5217\u8868\u7684\u957f\u5ea6\u662f\u52a8\u6001\u53ef\u53d8\u7684\u3002\u53ef\u4ee5\u4f7f\u7528append()<\/code>\u65b9\u6cd5\u6dfb\u52a0\u5143\u7d20\uff0c\u6216\u4f7f\u7528pop()<\/code>\u65b9\u6cd5\u79fb\u9664\u5143\u7d20\u3002\u5bf9\u4e8eNumPy\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528np.resize()<\/code>\u51fd\u6570\u8c03\u6574\u6570\u7ec4\u7684\u5f62\u72b6\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n
# \u4f7f\u7528\u5217\u8868\ndynamic_list = [1, 2, 3]\ndynamic_list.append(4)  # \u6dfb\u52a0\u5143\u7d20\nprint(dynamic_list)  # \u8f93\u51fa\uff1a[1, 2, 3, 4]\ndynamic_list.pop()  # \u79fb\u9664\u6700\u540e\u4e00\u4e2a\u5143\u7d20\nprint(dynamic_list)  # \u8f93\u51fa\uff1a[1, 2, 3]\n\n# \u4f7f\u7528NumPy\nimport numpy as np\ndynamic_array = np.array([1, 2, 3])\nresized_array = np.resize(dynamic_array, (5,))  # \u8c03\u6574\u6570\u7ec4\u5927\u5c0f\u4e3a5\nprint(resized_array)  # \u8f93\u51fa\uff1a[1 2 3 1 2]\n<\/code><\/pre>\n
\u8fd9\u79cd\u7075\u6d3b\u6027\u4f7f\u5f97Python\u5728\u5904\u7406\u6570\u7ec4\u65f6\u975e\u5e38\u65b9\u4fbf\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u5b9a\u4e49\u8f93\u5165\u6570\u7ec4\u7684\u957f\u5ea6\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u6765\u5b9e\u73b0\uff0c\u4e3b\u8981\u6709\u4f7f\u7528\u5185\u7f6e\u51fd\u6570len()\u3001\u624b\u52a8\u7ef4\u62a4\u8ba1\u6570\u5668\u3001\u5229\u7528 […]","protected":false},"author":3,"featured_media":1096666,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1096655"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1096655"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1096655\/revisions"}],"predecessor-version":[{"id":1096668,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1096655\/revisions\/1096668"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1096666"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1096655"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1096655"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1096655"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}